linux-kernel - Re: [PATCH 1/3] clk: exynos-audss: Keep the parent of mout

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Date:	Wed, 11 Jun 2014 19:28:48 +0200
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	Tushar Behera <tushar.b@...sung.com>, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
CC:	mturquette@...aro.org, t.figa@...sung.com, linux@....linux.org.uk,
	galak@...eaurora.org, ijc+devicetree@...lion.org.uk,
	mark.rutland@....com, pawel.moll@....com, robh+dt@...nel.org,
	kgene.kim@...sung.com, khilman@...aro.org, dianders@...gle.com,
	trblinux@...il.com, Shaik Ameer Basha <shaik.ameer@...sung.com>
Subject: Re: [PATCH 1/3] clk: exynos-audss: Keep the parent of mout_audss
 always enabled

Hi Tushar,

On 11.06.2014 07:32, Tushar Behera wrote:
> When the output clock of AUDSS mux is disabled, we are getting kernel
> oops while doing a clk_get() on other clocks provided by AUDSS. Though
> user manual doesn't specify this dependency, we came across this issue
> while disabling the parent of AUDSS mux clocks.

Could you provide more data about this oops? E.g. kernel log, platforms
it affects (just peach-pit or also others), test case, extra patches
applied on top of mainline (if any).

I don't like this solution, because keeping a clock always enabled is
usually not desirable and this driver is also used on other platforms
than peach-pit, so this change will affect all of them.

Best regards,
Tomasz
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